Malicious PDF — malware analysis report

Static analysis result for SHA-256 38d7f7a784800f97…

MALICIOUS

PDF

38.2 KB Created: 2020-08-23 23:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bd4968edae34595d69068da3a848c28 SHA-1: 864fc6f47b5be1df98edba0daef10c48fbdf6b26 SHA-256: 38d7f7a784800f97cc63ee1d9414f92074387485691e045246e5960ced4c74cb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector. This redirector is likely used to obscure the final malicious destination. The document body contains garbled text but includes the suspicious URL, suggesting an attempt to disguise malicious content within a seemingly legitimate document.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=android+parseint+exception
    • http://vazedib.thebarcrossfit.com/uploads/1/3/2/7/132710797/6978442.pdf
    • http://files.beestonartsmanagement.com/uploads/1/3/0/7/130775977/8521535.pdf
    • http://files.inspiralnyc.com/uploads/1/3/1/3/131383777/d7ccbd72b72.pdf
    • https://cdn.shopify.com/s/files/1/0433/7487/0689/files/bodybuilding_exercises_pictures_training.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2445/files/30772154169.pdf
    • https://cdn.shopify.com/s/files/1/0436/1682/9603/files/joomla_template_zip_file.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3486/files/77923272292.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/39682944266.pdf
    • https://cdn.shopify.com/s/files/1/0438/4446/8898/files/sheetrock_premixed_all-_purpose_drywall_joint_compound.pdf
    • https://cdn.shopify.com/s/files/1/0429/9273/0275/files/attachment_style_questionnaire_feeney.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2965/files/41946285746.pdf
    • https://cdn.shopify.com/s/files/1/0433/9384/3358/files/arval_service_auftrag.pdf
    • https://cdn.shopify.com/s/files/1/0446/8817/9353/files/assistant_property_manager_resume.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/ronijugirogukud.pdf
    • https://cdn.shopify.com/s/files/1/0433/1326/6846/files/47760714931.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058cb.bin
96b21ea3d29710f24ed037867999b0cefcaa1a4fa683b03a5695d65916b7b92c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58CB 5092 bytes
font_01_sfnt_off00006a21.bin
a05f886de05fca6e52d42fe9b100fb93a9ea3e92f93830559a94885ade5240e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A21 9992 bytes

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